The Invisibility Lenses | Outrageous Acts of Science

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Narrator: IN THE WORLD OF INTERNET SCIENCE WIZARD
BRUSSPUP, NOTHING IS QUITE WHAT IT SEEMS, LIKE THIS RULER… ♪♪ …AND THIS KNIFE. WE’RE ONE STEP CLOSER
TO AN INVISIBILITY CLOAK. THIS IS ONE OF MY FAVORITE CLIPS BECAUSE THE PHYSICS IS SO SMART. Narrator: BRUSSPUP’S
INVISIBILITY DEVICE CONFOUNDED
1 MILLION VIEWERS ONLINE. BUT HOW DOES IT WORK? NORMALLY, WE SEE THINGS
BECAUSE THEY EITHER EMIT LIGHT, LIKE MY SMILE, OR THEY REFLECT LIGHT,
LIKE MY SMILE. IN THIS CASE, NEITHER OF
THESE THINGS ARE HAPPENING. WHAT BRUSSPUP HAS DONE
IS USED A SET OF LENSES SO THAT THERE ARE CERTAIN PLACES HE CAN HOLD OBJECTS SO THAT THE LIGHT REFLECTED FROM THEM NEVER
REACHES THE CAMERA. BUT MORE IMPORTANTLY,
THE LIGHT FROM BEHIND THE OBJECT DOES REACH THE CAMERA. AND IT GIVES THE ILLUSION OF THAT OBJECT
HAVING DISAPPEARED. Narrator: SO HOW DID BRUSSPUP
PULL THIS OFF? IN BRUSSPUP’S SETUP,
HE HAS FOUR LENSES AND A CAMERA. Woman: THE LIGHT FROM THE
BACKGROUND ENTERS THE FIRST LENS AND GETS FLIPPED UPSIDE DOWN. IT’S SENT FROM THE SECOND LENS
TO THE THIRD LENS. AND BETWEEN THE THIRD
AND FOURTH LENS, IT’S FOCUSED DOWN ONTO A POINT
AND FLIPPED UPSIDE DOWN AGAIN. BY THE TIME IT COMES
OUT OF THE FOURTH LENS, IT’S NO LONGER DISTORTED. IT LOOKS EXACTLY AS IT SHOULD DO IF THERE WEREN’T
ANY LENSES IN BETWEEN. THE AREA BETWEEN THE LENSES BUT OUTSIDE THE BEAM OF LIGHT IS KNOWN AS THE CLOAKING REGION. AND THIS IS BECAUSE ANY LIGHT THAT ENTERS THE LAST LENS
FROM THIS REGION DOES NOT MAKE IT TO THE CAMERA. AND IT’S THOSE POINTS
HE CAN PUT IN A KNIFE, HIS HAND, A LASER. AND THEY WILL DISAPPEAR.

40 COMMENTS

  1. “One step closer to invisibility” LMAO, no. First, we already have that, and second, you wold never use lenses to render an object invisible; you use metamaterials. Quasicrystals. Alien Scientist has made some strong videos on this subject.

    Congrats Science Channel you’ve discovered the physics of the 17th century!

  2. Self practical training knowledge is must… Be real be practical.. Sports games fun enjoyment love sex lust etc are must always.. Self work self interests self style are must always..

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